College Physics
1st Edition
ISBN: 9781938168000
Author: Paul Peter Urone, Roger Hinrichs
Publisher: OpenStax College
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Textbook Question
Chapter 6, Problem 17CQ
Two friends are having a conversation. Anna says a satellite in orbit in freefall because the satellite keeps falling toward Earth. Tom says a satellite in orbit is not in freefall because the acceleration due to gravity is not 9.80 m/s2. Who do you agree with and why?
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What keeps up a satellite on its orbit?
a. Gravitational Force of Attraction
b. High Tangential Speed
c. The empty space
d. Weightless Motion
A spy satellite is in circular orbit around Earth. It makes one revolution in 2.70 h. Mass of Earth is 5.974 × 1024 kg, radius of Earth is 6371 km and Gravitational constant G is = 6.674 × 10−11 N·m2/kg2.
A) How high above Earth’s surface is the satellite? in KM
B) What is the satellite’s acceleration? in m/s2
Communications satellites are placed in a circular orbit where they stay directly over a fixed point on the equator as the earth rotates. These are called geosynchronous orbits. The altitude of a geosynchronous orbit is 3.58 x 10^7m. a. What is the period of a satellite in a geosynchronous orbit? b. What is the apparent weight of a 2000 kg satellite in a geosynchronous orbit?
Chapter 6 Solutions
College Physics
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